自动在空闲时间执行定时任务

internal/utils/idles/run.go

@@ -0,0 +1,128 @@
+// Copyright 2024 GoEdge CDN goedge.cdn@gmail.com. All rights reserved. Official site: https://goedge.cn .
+
+package idles
+
+import (
+	"encoding/json"
+	teaconst "github.com/TeaOSLab/EdgeNode/internal/const"
+	"github.com/TeaOSLab/EdgeNode/internal/goman"
+	fsutils "github.com/TeaOSLab/EdgeNode/internal/utils/fs"
+	"github.com/iwind/TeaGo/Tea"
+	"github.com/shirou/gopsutil/v3/load"
+	"os"
+	"sort"
+	"time"
+)
+
+const maxSamples = 7
+const cacheFile = "idles.cache"
+
+var hourlyLoadMap = map[int]*HourlyLoad{}
+var minLoadHour = -1
+
+type HourlyLoad struct {
+	Hour   int       `json:"hour"`
+	Avg    float64   `json:"avg"`
+	Values []float64 `json:"values"`
+}
+
+func init() {
+	if !teaconst.IsMain {
+		return
+	}
+
+	// recover from cache
+	{
+		data, err := os.ReadFile(Tea.Root + "/data/" + cacheFile)
+		if err == nil {
+			_ = json.Unmarshal(data, &hourlyLoadMap)
+		}
+	}
+
+	goman.New(func() {
+		var ticker = time.NewTicker(1 * time.Hour)
+		for range ticker.C {
+			CheckHourlyLoad(time.Now().Hour())
+		}
+	})
+}
+
+func CheckHourlyLoad(hour int) {
+	avgLoad, err := load.Avg()
+	if err != nil {
+		return
+	}
+
+	hourlyLoad, ok := hourlyLoadMap[hour]
+	if !ok {
+		hourlyLoad = &HourlyLoad{
+			Hour: hour,
+		}
+		hourlyLoadMap[hour] = hourlyLoad
+	}
+
+	if len(hourlyLoad.Values) >= maxSamples {
+		hourlyLoad.Values = hourlyLoad.Values[:maxSamples-1]
+	}
+	hourlyLoad.Values = append(hourlyLoad.Values, avgLoad.Load15)
+
+	var sum float64
+	for _, v := range hourlyLoad.Values {
+		sum += v
+	}
+	hourlyLoad.Avg = sum / float64(len(hourlyLoad.Values))
+
+	// calculate min load hour
+	var allLoads = []*HourlyLoad{}
+	for _, v := range hourlyLoadMap {
+		allLoads = append(allLoads, v)
+	}
+
+	sort.Slice(allLoads, func(i, j int) bool {
+		return allLoads[i].Avg < allLoads[j].Avg
+	})
+
+	minLoadHour = allLoads[0].Hour
+
+	// write to cache
+	hourlyLoadMapJSON, err := json.Marshal(hourlyLoadMap)
+	if err == nil {
+		_ = os.WriteFile(Tea.Root+"/data/"+cacheFile, hourlyLoadMapJSON, 0666)
+	}
+}
+
+func Run(f func()) {
+	defer f()
+
+	if minLoadHour < 0 {
+		fsutils.WaitLoad(15, 8, time.Hour)
+		return
+	}
+
+	var hour = time.Now().Hour()
+	if minLoadHour == hour {
+		fsutils.WaitLoad(15, 10, time.Minute)
+		return
+	}
+
+	if minLoadHour < hour {
+		time.Sleep(time.Duration(24-hour+minLoadHour) * time.Hour)
+	} else {
+		time.Sleep(time.Duration(minLoadHour-hour) * time.Hour)
+	}
+	fsutils.WaitLoad(15, 10, time.Minute)
+}
+
+func RunTicker(ticker *time.Ticker, f func()) {
+	for range ticker.C {
+		Run(f)
+	}
+}
+
+func TestMinLoadHour() int {
+	return minLoadHour
+}
+
+func TestHourlyLoadMap() map[int]*HourlyLoad {
+	return hourlyLoadMap
+}